Patent GB-385520-A (GB)
Title: Improvements in or relating to mechanism for applying backlining components to roundback or other books
IPC: B42C9/02
Filed: 1932-05-28
Abstract: 385,520. Bookbinding-machines. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Sheridan Co.. T. W. & C. B. ; 135, Lafayette Street, New York, U.S.A.) May 28, 1932, No. 15205. [Class 16.] A mechanism for applying back-lining components such as head-bands to the exposed round or other backs of books comprises an applier to which the components are supplied, means for moving the applier toward and from the book, and a registering-device movable to and from registering position and consisting of a feeler to contact the end of the book and an adjuster connected with the feeler to adjust the component in exact register with the book. The invention is described as applied to a known type of backlining machine wherein round back books B, Figs. 1, 4, and 6, are fed in succession past various stations, backs uppermost, between guide-walls 25, 26 by a series of travelling pins 30 attached to a sprocket-chain 31 guided in the guidewall 25 and driven from a main shaft 17. Each head-band may consist of a doubled-over piece of fabric with a cord inserted in the fold to produce an ornamental bead. The two headband strips H<1> are fed from two longitudinally-adjustable rolls 130, mounted on a common axle 131 in frame brackets 132, and pass around longitudinallyadjustable pulleys 133, 134 to upper and lower guide plates 138, 139 which extend beyond the feeding-means for the strips. The strips are severed, received by a movable receiving-table, lifted from the table by a vertically movable holder 70, preferably of the suction type, and applied to the back of the book. The registering-member for each head-band is in the form of a lever 234, Figs. 1 and 6, pivoted at 236 to a bracket attached to a vertically movable carriage-bar 80, to which carriage is also attached the headband holder 70. The registering-lever 234 is provided at its lower end with two adjustable contacts 239, 240, the contact 239 being adapted to contact the end of the book, while the contact 240 acts as an adjuster to contact the headband H as it is being applied to the book, to align and square it, and adjust it longitudinally so that the bead of the head-band will overhang the book to the desired extent. In operation, each registering-lever 234 is actuated so that it descends in outswung position to clear the book and head-band, and then swings inwardly. This swinging action is obtained by providing on the upper part of each lever a cam surface which is spring-pressed into engagement with an adjustable cam roller 252. The adjuster 240 may contact the head-band just before or just as it is applied and pressed against the glued back of the book. The back edge of the book B, Fig. 4, projects above the guide-walls 25, 26 and is clamped during the head-banding operation between a stationary adjustable member 33 and a movable member 34. The member 34 is connected to toggle links 40, 41 mounted on the guide-wall 26 ; the toggles are connected by a link 43 to the front end of a cam lever 44, pivoted at its rear end on a fixed axle 45 and provided at an intermediate point with a cam roll bearing upon the periphery of a cam 22 on the main shaft 17 ; a strong spring 47 opposes the cam and actuates the linkages to compress the book. After each head-band has been severed it is received by a movable table 50. The two tables 50 are mounted on a framework carriage provided with screw means for adjusting the longitudinal positions of the tables to suit the length of the book. The lower ends of the vertical arms 58, 59 of the carriage are pivotally mounted on axles 60, 61 in fixed brackets 62. The framework may be swung in timed relation to other mechanisms through a two-armed cam lever 65 fulcrummed on the axle 60, the upper arm being connected to the end 63a of one of the stays of the framework, and the lower arm being provided with a cam roll 66 resting on a cam 19 on the main shaft. A spring 67 is arranged on the lever 65 to move forwardly the carriage in opposition to the cam. Each headband applying-device consists of two parts, a suction holder 70, and a shaper 90 co-operating therewith to bend and shape down one or both ends of the head-band around the convex back of the book. Each suction holder 70 consists of a narrow vertically anovable bar, formed with two suction passages, the top end being enlarged at 73 and provided with a flexible pipe 74 which is connected to a main pipe 75 controlled by a pneumatic valve 76, Fig. 1. The valve has a slide 77 which co-operates with a cam 18 on the main shaft. Each suction holder is vertically slidable within the limit stops under spring pressure within a block 78 forming part of a vertically moving carriage attached to the slotted carriage bar 80. The descent of the block 78 relative to the carriage is limited by a stop screw. The shaping-device comprises two opposite bars 90 which slide closely adjacent the suction holder 70 but are normally higher, and contact the book later, than the holder. Each bar 90 is offset near the top and slides within limit stops, under spring pressure, within a block 94 attached to the carriage-bar 80. Each of the carriage-bars 80 extends between the slot of a longitudinally-adjustable guide 102, and is attached to a longitudinally-adjustable sliding block 103 which is secured to a guide-bar 105. The guide-bar 105 is attached to the top end of a vertically movable slide 107 having dovetailed engagement with the fixed frame bracket 15. The slide 107 is connected to an actuating- link 109 pivoted to a cam lever 110 which is pivoted at 112 and engages a cam 21 on the main shaft 17. The cam, opposed by gravity, operates to lift the slide and consequently the head-band applying system. Each pair of slotted upstanding guides 102 is arranged on a longitudinally-adjustable carriage slide 113. Each carriage 113 is supported and guided in grooves in brackets 117 and is adjustable longitudinally of the machine by bolts 119 to accommodate the applying, feeding, and severing-devices to variations in the length of book. On each carriage 113 is provided a recess wherein is adjustably mounted an upper feed-roller 144. The two upper and lower feed-rollers are mounted on common shafts, the former provided with a hand-wheel 152 for manual rotation, and are resiliently pressed into contact with each other. The upper and lower feed shafts are geared together and the rollers and gears are arranged to be movable along the shafts. The head-band strip H<1> passes between the guide-plates 138, 139 which extend beyond the feed-rollers to the severing- means, the plates being slotted for the reception of the feed-rollers. The pulleys 133, 134 and the guide-plates are grooved to receive the bead on the head-band strip H<1>, and a spring bears on the strip as it passes around the roller 133 to provide a drag. A one-way clutch of the ball type is mounted on the lower feed shaft 156, the driving-element being oscillated through a toothed vertical rack 164 integral with a sleeve 165 which surrounds a rod 167. The rod 167 is connected to a rod 169 which is connected by a link 170 to a cam lever 171. The cam lever is fulcrummed on an axle 112 and is provided with a cam roll 172 engaging in a groove in a feed cam 20. The feed cam 20 operates to pull down the rack 164 against the action of a spring 174 surrounding an extension rod 175. Fixed stop collars and a rack-operated stop collar are provided on the extension rod 169 to adjust the amount of rotation of the feed-rollers, and hence the length of head-bands to be applied to the book ; to allow of these adjustments the cam groove is widened so that the roller need not follow the cam surface at every point. A device is provided to stop the feed in the event of the absence of a book in the guidewalls. For this purpose the rod 169 is provided with a fixed screwed sleeve 188 having large adjusting-nuts 189, 190 which co-operate with a notched latch or finger 195. A certain amount of lost motion is provided in the operation of the feed rack to facilitate the proper co-operation of the nuts 189, 190 with the latch 195. A pivoted feeler-arm 200, situated one book space ahead of the head-banding station, extends through a slot in the guidewall 25 under the action of a light compression spring, so that each book thrusts the feeler out as it passes along the guides. The feeler-arm is connected through levers to the latch-finger 195 so that when no book is present and the light spring is relaxed the latch-finger 195 is caused to swing forward in the path of the adjusting nuts 189, 190 to prevent the upward movement of the rack and so prevent the feed of the head-band strip. Each severing-means comprises a lower fixed blade 215 and a movable upper blade 216, one set being attached to each of the longitudinal carriages 113. Each upper blade is pivoted at an intermediate point in its length, and the upper ends are secured to a slotted horizontal bar 222 mounted at each end on parallel vertical slides 224, Fig. 1. The slides are actuated through linkages by a cam 23 on the main shaft 17 to give the upper blades a downward movement. The machine may be adapted to feed, sever, and apply a wide sheet of back-lining paper with or without attached head-bands.